<template>
  <div class="login_container">
      <div class="login_box">
          <!-- 头像区域 -->
          <div class="avatar_box">
              <img src="../assets/home.png" alt="">
          </div>
        <!-- 登录表单区域 -->
        <el-form ref="loginFormRef" class="login_form" :model="loginForm" :rules="loginFormRules">
            <!-- 用户名 -->
           <el-form-item prop="username">
             <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
           </el-form-item>
           <!-- 密码 -->
           <el-form-item prop="password">
             <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
           </el-form-item>
           <!-- 按钮区域 -->
           <el-form-item class="btns">
             <el-button type="primary" plain @click="login">登录</el-button>
             <el-button type="info" plain @click="resetLoginForm">重置</el-button>
           </el-form-item>
        </el-form>
      </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
    // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      //   这是表单的验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登陆表单
    resetLoginForm () {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },

    login () {
      this.$refs.loginFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败！')
        this.$message.success('登陆成功！')

        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: #fff;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}

.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns{
    display: flex;
    justify-content: flex-end;
}

</style>
